A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset the administrator password of the device to a blank value. This grants unauthorized access to the router’s web management interface without requiring valid credentials.
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Thu, 31 Jul 2025 20:45:00 +0000
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Linksys wrt120n |
Thu, 31 Jul 2025 18:15:00 +0000
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ssvc
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Thu, 31 Jul 2025 15:15:00 +0000
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Description | A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset the administrator password of the device to a blank value. This grants unauthorized access to the router’s web management interface without requiring valid credentials. | |
Title | Linksys WRT120N tmUnblock.cgi Stack-Based Buffer Overflow Admin Password Reset | |
Weaknesses | CWE-121 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2025-07-31T14:57:59.666Z
Updated: 2025-07-31T17:58:15.493Z
Reserved: 2025-07-30T14:54:06.838Z
Link: CVE-2014-125122

Updated: 2025-07-31T17:58:06.182Z

Status : Awaiting Analysis
Published: 2025-07-31T15:15:34.620
Modified: 2025-07-31T18:42:37.870
Link: CVE-2014-125122

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